| Year | Title | Role | Notes |
| 1997 | The Borrowers | Peagreen Clock | - |
| 1999 | Anna and the King | Louis T. Leonowens | - |
| 2001 | Harry Potter and the Philosopher's Stone | Draco Malfoy | Released as Harry Potter and the Sorcerer's Stone in the US |
| 2002 | Harry Potter and the Chamber of Secrets | Draco Malfoy | - |
| 2004 | Harry Potter and the Prisoner of Azkaban | Draco Malfoy | - |
| 2005 | Harry Potter and the Goblet of Fire | Draco Malfoy | - |
| 2007 | Harry Potter and the Order of the Phoenix | Draco Malfoy | - |
| 2008 | The Disappeared | Simon Pryor | - |
| 2009 | Harry Potter and the Half-Blood Prince | Draco Malfoy | - |
| 2010 | Harry Potter and the Deathly Hallows – Part 1 | Draco Malfoy | - |
| 2010 | White Other | Ray Marsden | Short Film |
| 2010 | Get Him to the Greek | Himself | Cameo |
| 2010 | 13Hrs | Gary Ashby | - |
| 2011 | Harry Potter and the Deathly Hallows – Part 2 | Draco Malfoy | - |
| 2011 | Rise of the Planet of the Apes | Dodge Landon | - |
| 2012 | The Apparition | Patrick | - |
| 2012 | From the Rough | Edward | - |
| 2013 | Belle | James Ashford | - |
| 2013 | In Secret | Camille Raquin | - |
| 2014 | Against the Sun | Tony Pastula | - |
| 2016 | Risen | Lucius | - |
| 2016 | Message from the King | Frankie | - |
| 2016 | A United Kingdom | Rufus Lancaster | - |
| 2016 | Sheep and Wolves | Grey (voice) | English dub |
| 2017 | Megan Leavey | Andrew Dean | - |
| 2017 | Feed | Matt Grey | - |
| 2017 | Stratton | Cummings | - |
| 2018 | Ophelia | Laertes | - |
| TBA | Whaling | Brandon | Post-production |